The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2009
Filed:
Dec. 28, 2004
Konstantin Dornhof, Immendingen, DE;
Konstantin Dornhof, Immendingen, DE;
EBM-Papst St. Georgen GmbH & Co. KG, St. Georgen, DE;
Abstract
The invention relates to an electronically commutated motor () and to a method of controlling an electronically commutated motor (). In order to reduce commutation noise, it is proposed to influence the working range of the power-stage transistors () with the aid of a component (), in such a way that each transistors produces, during energization of each respective stator winding, a substantially constant current through the stator winding (). Preferably, each power-stage transistor operates within a pinch-off range.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile